Easy Creamed Spinach

Directions

1. 1
   Preheat the oven to 425°F.
2. 2
   Melt the butter in a heavy-bottomed saute pan over medium heat. Add the onions and saute until translucent, about 15 minutes.
3. 3
   Add the flour and nutmeg and cook, stirring, for 2 more minutes.
4. 4
   Add the milk and cook until thickened.
5. 5
   Squeeze as much liquid as possible from the spinach and add the spinach to the sauce.
6. 6
   Add 1/2 cup of the Parmesan cheese and mix well.
7. 7
   Season to taste, with salt and pepper.
8. 8
   Transfer the spinach to a baking dish and sprinkle the remaining 1/2 cup Parmesan and the Gruyere.